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Large-scale carbon dioxide removal (CDR) strategies are needed for us to reach our climate targets. Geochemical CDR involves approaches that react atmospheric CO2 with naturally occurring rocks or anthropogenic alkaline materials. Many of these technologies are currently being piloted and tested commercially. However, there has been no comprehensiveassessment of the resources available for geochemical CDR. Understanding the spatial distribution, capacity, and accessibility of these materials is essential for informing international climate policy, guiding infrastructure investment, and ensuring environmental safety. This presentation will summarise the current state of knowledge and demonstrate how gCDR resources are fundamental to technology deployment.
